Determine whether each sequence is arithmetic or geometric. sequence 1: –10, 20, –40, 80, sequence 2: 15, –5, –25, –45,
a. sequence 1 is arithmetic and sequence 2 is geometric.
b. both sequences are geometric.
c. sequence 2 is arithmetic and sequence 1 is geometric.
d. both sequences are arithmetic.
sequence 2 may be arithmetic because -20 but i can't find out what sequence 1 is

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: